package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.service.ShoppingCartService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;


import com.sky.websocket.WebSocketServer;
import lombok.val;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.mail.MailException;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.RequestBody;

import java.beans.Transient;
import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.prefs.BackingStoreException;
import java.util.stream.Collectors;

@Service
public class OrderServiceImpl implements OrderService {
    private static final Logger log = LoggerFactory.getLogger(OrderServiceImpl.class);
    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private UserMapper userMapper;

    @Value("${sky.shop.address}")
    private String shopAddress;
    @Value("${sky.baidu.ak}")
    private String ak;

    @Autowired
    private WebSocketServer webSocketServer;
    @Transactional
    public OrderSubmitVO submitOrdert(OrdersSubmitDTO ordersSubmitDTO){

        //业务异常判断
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if(addressBook == null){
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //订单的收货地址是否存在
        //购物车是否为空
        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart =new ShoppingCart();
        shoppingCart.setUserId(userId);

        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if(shoppingCartList ==null ||shoppingCartList.size()==0){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        checkOutOfRange(addressBook.getProvinceName()+addressBook.getCityName()+addressBook.getDetail());

        // 订单表插入一条数据
        Orders orders=new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);

        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(userId);
        orders.setAddress(addressBook.getCityName()+addressBook.getProvinceName()+addressBook.getDetail());


        orderMapper.insert(orders);
        //订单详细表插入多条数据
        List<OrderDetail> orderDetails=new ArrayList<>();
        for(ShoppingCart cart:shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetails.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetails);
        //下单成功清空购物车数据
        shoppingCartMapper.clean(userId);
        //封装为VO返回结果
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderTime(orders.getOrderTime())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .build();
        return orderSubmitVO;
    }


    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

//        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );
//
//        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
//            throw new OrderBusinessException("该订单已支付");
//        }

        JSONObject jsonObject = new JSONObject();
        jsonObject.put("code", "ORDERPAID");
        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        //为替代微信支付成功后的数据库订单状态更新，多定义一个方法进行修改
        Integer OrderPaidStatus = Orders.PAID; //支付状态，已支付
        Integer OrderStatus = Orders.TO_BE_CONFIRMED;  //订单状态，待接单



        //发现没有将支付时间 check_out属性赋值，所以在这里更新
        LocalDateTime check_out_time = LocalDateTime.now();

        //获取订单号码
        String orderNumber = ordersPaymentDTO.getOrderNumber();

        log.info("调用updateStatus，用于替换微信支付更新数据库状态的问题");
        orderMapper.updateStatus(OrderStatus, OrderPaidStatus, check_out_time, orderNumber);

        //通知商家接单
        String number=ordersPaymentDTO.getOrderNumber();
        Orders ordersDB= orderMapper.getByNumber(number);
        Map map=new HashMap();
        map.put("type",1);
        map.put("orderId",ordersDB.getId());
        map.put("content","订单号："+ ordersPaymentDTO.getOrderNumber());
        String json=JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);


        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);


    }

    /**
     * 历史订单查询
     * @param ordersPageQueryDTO
     * @return
     */
    public PageResult pageQuery(@RequestBody OrdersPageQueryDTO ordersPageQueryDTO){
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());

        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

        //根据订单id返回所有的order_detail并组合为VO



        long total = page.getTotal();
        List<OrderVO> result = getOrderVo(page.getResult());

        return new PageResult(total,result);
    }
    private List<OrderVO> getOrderVo(List<Orders> ordersList){
        List<OrderVO> orderVOList =new ArrayList<>();
        if(ordersList.size() ==0 ||ordersList.isEmpty()){
            return orderVOList;
        }
        for (Orders order : ordersList) {
            OrderVO orderVO = new OrderVO();
            BeanUtils.copyProperties(order, orderVO);

            List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(order.getId());

            orderVO.setOrderDetailList(orderDetailList);

            orderVO.setOrderDishes(getOrderDish(orderDetailList));

            orderVOList.add(orderVO);
        }
        return orderVOList;
    }
    //这里使用orderDetailList作为参数在搜索订单时可以少访问一次数据库，但对于其他业务，此方法不一定能重用，依赖于getOrderVo方法耦合性较高
    private String getOrderDish(List<OrderDetail> orderDetailList){

        List<String> orderDishList = orderDetailList.stream().map(x -> {
            String orderDish = x.getName() + "*" + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());

        // 将该订单对应的所有菜品信息拼接在一起
        return String.join("", orderDishList);
    }



    /**
     * 根据订单号查询
     * @param id
     * @return
     */
    public OrderVO queryById(Long id){
        Orders order=orderMapper.getById(id);
        List<OrderDetail> orderDetails=orderDetailMapper.getByOrderId(id);
        OrderVO orderVO=new OrderVO();
        BeanUtils.copyProperties(order,orderVO);
        orderVO.setOrderDetailList(orderDetails);

        return orderVO;
    }
    /**
     * 用户取消订单
     * @param id
     */
    public void cancel(Long id) throws Exception {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        // 校验订单是否存在
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (ordersDB.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());

        // 订单处于待接单状态下取消，需要进行退款
        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //退款
            //payBack(ordersDB);
            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }

        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);

    }
    private void payBack(Orders ordersDB) throws Exception{
        //调用微信支付退款接口
        weChatPayUtil.refund(
                ordersDB.getNumber(), //商户订单号
                ordersDB.getNumber(), //商户退款单号
                new BigDecimal(0.01),//退款金额，单位 元
                new BigDecimal(0.01));//原订单金额
    }

    /**
     * 再来一单
     * @param id
     */
    public void repetition(Long id){
        //时间修改


        List<OrderDetail> orderDetails= orderDetailMapper.getByOrderId(id);
        List<ShoppingCart> shoppingCartList = orderDetails.stream().map(x->{
            ShoppingCart shoppingCart =new ShoppingCart();
            BeanUtils.copyProperties(x,shoppingCart);
            shoppingCart.setUserId(BaseContext.getCurrentId());
            shoppingCart.setCreateTime(LocalDateTime.now());
            return shoppingCart;
        }).collect(Collectors.toList());

        shoppingCartMapper.insertBatch(shoppingCartList);
    }
    /**
     * 管理端取消订单
     * @param ordersCancelDTO
     */
    public void adminCancel(OrdersCancelDTO ordersCancelDTO) throws Exception{
        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());

        Orders orders=new Orders();

        if(ordersDB==null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //调用微信支付退款接口
           //payBack(ordersDB);

            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }
        orders.setId(ordersDB.getId());
        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 管理端查询订单
     * @return
     */
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO){
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());

        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

        List<OrderVO> orderVOList = getOrderVo(page.getResult());
        return new PageResult(page.getTotal(),orderVOList);
    }
    /**
     * 获取三个状态的订单数
     * @return
     */
    public OrderStatisticsVO getStatus(){

        int toBeConfirmed = orderMapper.getStatusCount(Orders.TO_BE_CONFIRMED);
        int deliveryInProgress = orderMapper.getStatusCount(Orders.DELIVERY_IN_PROGRESS);
        int confirmed = orderMapper.getStatusCount(Orders.CONFIRMED);

        OrderStatisticsVO orderStatisticsVO=new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return orderStatisticsVO;
    }
    /**
     *
     * 接单
     * @param ordersConfirmDTO
     */
    public void confirm(OrdersConfirmDTO ordersConfirmDTO){
        Orders orders=Orders.builder().id(ordersConfirmDTO.getId()).status(Orders.CONFIRMED).build();
        orderMapper.update(orders);
    }

    /**
     * 商家拒单
     * @param ordersCancelDTO
     */
    public void rejection(OrdersRejectionDTO ordersCancelDTO) throws Exception{
        Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());
        if(ordersDB.getStatus()!=2||ordersDB.getStatus()==null){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders=new Orders();
        // 订单处于待接单状态下取消，需要进行退款
        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //退款
            //payBack(ordersDB);
            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }

        // 更新订单状态、取消原因、取消时间
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersCancelDTO.getRejectionReason());

        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }
    /**
     * 派送
     * @param id
     */
    public void delivery(Long id){
        Orders ordersDB = orderMapper.getById(id);
        if(ordersDB ==null || ordersDB.getStatus() != Orders.CONFIRMED)
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        Orders orders = Orders.builder().id(id).status(Orders.DELIVERY_IN_PROGRESS).build();
        orderMapper.update(orders);
    }
    /**
     * 完成订单
     *
     * @param id
     */
    public void complete(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        // 校验订单是否存在，并且状态为4
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为完成
        orders.setStatus(Orders.COMPLETED);
        orders.setDeliveryTime(LocalDateTime.now());

        orderMapper.update(orders);
    }

    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }
    /**
     * 催单
     * @param id
     */
    public void reminder(Long id){
        Orders orders = orderMapper.getById(id);
        //催单
        if(orders.equals(null))
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        Map map=new HashMap();
        map.put("type",2);
        map.put("orderId",id);
        map.put("content","订单号："+ orders.getNumber());
        String json=JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);

    }
}
